Question

Is thin strips of vorticity are unstable to disturbances and tend to roll up?

(a) False

(b) True

The question was asked in homework.

Enquiry is from The Vortex Filament, Biot-Savart Law, Helmholtz Theorem topic in portion Flow over Airfoils over Finite Wing of Aerodynamics

Answer 1

Right option is (b) True

The explanation is: Vortex filament is well known that thin strip of vorticity are unstable to disturbance and tend to roll up. Here we test this using our model, we study two cases a parabolic vortex filament and a circular vortex filament.